Cash Flow Survival Guide for Construction Subcontractors

Of all the industries where cash flow is a persistent challenge, construction subcontracting may be the most financially demanding. Subcontractors finance a substantial portion of the overall project cost—labor, materials, equipment—while waiting on a payment chain that can stretch from the project owner through the GC and down to them, often 60 to 90 days after work is complete.

The Structural Cash Flow Challenges Subcontractors Face

Retainage: On most commercial construction projects, the owner withholds 5%–10% of each payment until project completion and sometimes beyond. For a subcontract worth $2 million, that's $100,000–$200,000 of earned revenue that won't be released until the project closes—which could be 12 to 18 months after your work is finished.

Pay-when-paid clauses: Many GC contracts include "pay-when-paid" language stating that the GC's obligation to pay the sub is conditioned on the GC receiving payment from the project owner. In some states this is enforceable; in others it's limited by statute. Either way, it can leave subcontractors waiting while owners and GCs resolve disputes above them in the payment chain.

Slow draw schedules: Project draws are typically submitted monthly, reviewed by an architect or owner's representative, and then processed—a cycle that can take 30–60 additional days from submission to actual payment. A sub who completes work in month 1 may wait until month 3 or 4 for the corresponding draw payment.

Material costs paid upfront: Many material suppliers require payment upon delivery or within 15–30 days. You're paying for concrete, steel, or electrical equipment long before the GC pays your invoice.

Solutions for Subcontractor Cash Flow

1. Negotiate shortened payment terms. Push back on standard subcontract payment terms. Even reducing from net-60 to net-30 can make a significant difference in your working capital requirements.

2. Request mobilization advances. On large subcontracts, request a mobilization advance (typically 10%–15% of the subcontract value) to cover initial material purchases and labor before the first draw cycle.

3. Use construction factoring for progress billings. Construction-experienced factoring companies can advance against your approved progress billings (the non-retainage portion), providing immediate cash while you wait for draw processing and GC payment.

4. Separate retainage from current billings in your accounting. Track retainage receivables separately so you always know how much is outstanding and when it's expected to be released. Unpaid retainage accumulates quickly on multi-project operations.

5. Qualify your GCs before bidding. Not all general contractors manage cash well. A GC with financial problems will pass those problems down to their subs. Check a GC's bonding capacity, payment history, and financial stability before accepting a large subcontract.

Construction Factoring: How It Works for Subs

Construction factoring advances against your approved and submitted pay applications—the amounts billed to the GC for completed work in the current billing period, excluding retainage.

The process: 1. Submit your monthly pay application to the GC 2. Present the pay application and supporting documentation to your factoring company 3. Receive an advance of 70%–85% of the approved billing amount within 24–48 hours 4. When the GC pays (typically 30–60 days later), the factor releases your reserve minus fees

The advance rate in construction is lower than in other industries (70%–85% vs. 90%–95% in freight or staffing) because of lien and retainage risk. But even a 75% advance immediately after submitting a pay application is far better than waiting 60 days for the full amount.